{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.4.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e156ecc4a14377eb3e4b71f340a8ae905b9864b2"
            }
          ],
          "repo": "https://github.com/nimiq/core-rs-albatross",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-c45m-6x25-3cjq"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-754"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40094.json"
  },
  "details": "nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In versions 1.3.0 and prior, network-libp2p discovery accepts signed PeerContact updates from untrusted peers and stores them in a peer contact book, eventually leading to address book crash. A PeerContact can legally contain an empty addresses list (no intrinsic validation enforces non-empty). Later, PeerContactBook::known_peers builds an address book by taking addresses.first().expect(\"every peer should have at least one address\"). If the attacker has inserted a signed peer contact with addresses=[], any call to get_address_book (RPC/web client) can panic and crash the node/RPC task depending on panic settings. This issue has been fixed in version 1.4.0.",
  "id": "CVE-2026-40094",
  "modified": "2026-08-07T11:31:28.597963864Z",
  "published": "2026-05-20T21:27:40.862Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40094.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-c45m-6x25-3cjq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40094"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nimiq/core-rs-albatross/pull/3715"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nimiq-blockchain: network-libp2p untrusted peer can crash address book via empty peer contact addresses"
}